It was back in the early 90..s that Daniel Roeth began spinning vinyls and playing acid trance &, hard techno, at underground parties in Moscow night clubs as a DJ. In 1993 he temporarily stopped DJ-career and began building "IntroSpect. Porta Tracks" studio where Daniel have continued working until the present.

William Grey for a long time (since 1989) was programming samplers, computers and was producing several demo-scene works as the 8-bit sound designer (Commodore-64, Atari XE, PC). Studio-producer / sound-designer / musical critic. His creation unreservedly by the scopes of one style, he is known as a multiformat specialist. In autumn of 2005 year he launched project Paranorma, this project is closely related to his scientific medical activity in Moscow. At this moment William Grey is manager and executive producer of “IntroSpect. Porta Tracks".

In 1993 that Daniel and William Grey met and began working together. They launched three independent projects: Vacuum Stalkers for progressive, tech sound compositions. Koan was responsible for ethnic lounge, ambient, cinematographic and documentary scores. And Fatum Sci-Fi also for electronic experimental collages / landscapes.

Vacuum Stalkers stuff based on progressive symbiosis of contemporary scientific and technical ideas inspired by audio-visual technologies, science-fiction elements and cyberpunk culture. Now Vacuum Stalkers are russian residents of PsyBooty Records (USA), Iboga Records (Denmark), Zenon Records (Australia), Cosmic Conspiracy Records (New Zealand) also are widely known outside Russia.